I’ll set dedicated 3 A rules for the 5 V and ground paths, create a bottom-layer GND pour while preserving the XIAO antenna keepout, route the board, then iterate on DRC and remaining airwires.
The 3 A net rules and antenna-notched ground pour are in place, and the board passes routing preflight. I’m starting the full route now, then I’ll clean up any remaining connections or violations.
The final connections need short neckdowns at small pads; the original minimum widths were too restrictive. I’m preserving 2 mm preferred power trunks while allowing brief pad-entry neckdowns, then reconnecting the remaining points.
General Purpose Thick Film Standard Power
and High-Power Chip Resistor
47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film
Features:
- RMCF – standard power ratings
- RMCP – high power ratings
- Nickel barrier terminations standard
- Power derating from 100% at 70ºC to zero at +155ºC
- RoHS compliant, REACH compliant, and halogen free
- AEC-Q200 compliant
A momentary or non-latching switch which causes a temporary change in the state of an electrical circuit only while the switch is physically actuated. SWITCH TACTILE SPST-NO 0.05A 24V